| Gelnhausen to Bistrita | 729.55 mi (1,174.09 km) |
| Gelnhausen to Blaj | 732.47 mi (1,178.79 km) |
| Gelnhausen to Bocsa | 669.76 mi (1,077.87 km) |
| Gelnhausen to Boldesti-Scaeni | 860.32 mi (1,384.55 km) |
| Gelnhausen to Bolintin Vale | 870.16 mi (1,400.38 km) |
| Gelnhausen to Borsa | 723.64 mi (1,164.58 km) |
| Gelnhausen to Botosani | 809.65 mi (1,303.00 km) |
| Gelnhausen to Brad | 686.62 mi (1,105.01 km) |
| Gelnhausen to Bragadiru | 882.05 mi (1,419.51 km) |
| Gelnhausen to Braila | 934.14 mi (1,503.36 km) |
| Gelnhausen to Brasov | 821.21 mi (1,321.61 km) |
| Gelnhausen to Breaza | 839.35 mi (1,350.80 km) |
| Gelnhausen to Bucharest | 885.07 mi (1,424.38 km) |
| Gelnhausen to Buftea | 873.56 mi (1,405.86 km) |
| Gelnhausen to Buhusi | 836.62 mi (1,346.42 km) |
